SOLUTION: Debbie has 80 metres of fencing to make a rectangular dog pound of dimensions length ,L,and width, W. What is the equation of the area of the dog pound as a function of length?

SOLUTION: Debbie has 80 metres of fencing to make a rectangular dog pound of dimensions length ,L,and width, W. What is the equation of the area of the dog pound as a function of length?

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Question 120777: Debbie has 80 metres of fencing to make a rectangular dog pound of dimensions length ,L,and width, W. What is the equation of the area of the dog pound as a function of length?
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Perimeter = 2W + 2L = 80, so divide both sides by 2:
W+L = 40
W= 40-L

Area = LW
Area = L(40-L)
Area =

R^2
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